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Doesn't most platforms have a reasonably stable interface for functions that are supposed to be reached from userspace? When does it actually matter if that bor
by yxhuvud 6y ago
Doesn't most platforms have a reasonably stable interface for functions that are supposed to be reached from userspace? When does it actually matter if that border coincide with where execution privileges are raised?
- steveklabnik 6y agoThey do: the interface is (usually) libc (or some equivalent), not the actual details of how libc makes said call. For an example of how this can play out, the parent is referring to things like https://marcan.st/2017/12/debugging-an-evil-go-runtime-bug/ https://marcan.st/2017/12/debugging-an-evil-go-runtime-bug/